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-rw-r--r--Makefile.in1
-rw-r--r--common.mk4
-rw-r--r--win32/Makefile.sub3
3 files changed, 6 insertions, 2 deletions
diff --git a/Makefile.in b/Makefile.in
index 11c772cbc6..840e804310 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -59,6 +59,7 @@ empty =
CC_VERSION = @CC_VERSION@
OUTFLAG = @OUTFLAG@$(empty)
COUTFLAG = @COUTFLAG@$(empty)
+CPPOUTFLAG = $(COUTFLAG)
ARCH_FLAG = @ARCH_FLAG@
CFLAGS_NO_ARCH = @CFLAGS@
CFLAGS = $(CFLAGS_NO_ARCH) $(ARCH_FLAG)
diff --git a/common.mk b/common.mk
index 6be5f13ff9..cf3802b8a9 100644
--- a/common.mk
+++ b/common.mk
@@ -197,8 +197,8 @@ mjit-headers: $(MJIT_MIN_HEADER)
rb_mjit_header.h: PHONY probes.h
$(ECHO) building $@
- $(Q) $(CPP) $(MJIT_HEADER_FLAGS) $(CFLAGS_NO_ARCH) $(XCFLAGS) $(CPPFLAGS) -DMJIT_HEADER $(srcdir)/vm.c $(COUTFLAG)vm.i
- $(Q) $(IFCHANGE) $@ vm.i
+ $(Q) $(CPP) $(MJIT_HEADER_FLAGS) $(CFLAGS_NO_ARCH) $(XCFLAGS) $(CPPFLAGS) -DMJIT_HEADER $(srcdir)/vm.c $(CPPOUTFLAG)vm.new
+ $(Q) $(IFCHANGE) $@ vm.new
$(MJIT_MIN_HEADER): rb_mjit_header.h $(srcdir)/tool/transform_mjit_header.rb
$(ECHO) building $@
diff --git a/win32/Makefile.sub b/win32/Makefile.sub
index 094ce90c78..e94b0c98ae 100644
--- a/win32/Makefile.sub
+++ b/win32/Makefile.sub
@@ -209,6 +209,9 @@ OUTFLAG = -Fe
!if !defined(COUTFLAG)
COUTFLAG = -Fo
!endif
+!if !defined(CPPOUTFLAG)
+CPPOUTFLAG = -Fi
+!endif
!if !defined(CSRCFLAG)
CSRCFLAG = -Tc
!endif